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Observation of multiple volume reflection by different planes in one bent silicon crystal for high-energy negative particles
/ Scandale, W (CERN) ; Vomiero, A (INFM, Brescia) ; Bagli, E (Ferrara U. ; INFN, Ferrara) ; Baricordi, S (Ferrara U. ; INFN, Ferrara) ; Dalpiaz, P (Ferrara U. ; INFN, Ferrara) ; Fiorini, M (Ferrara U. ; INFN, Ferrara) ; Guidi, V (Ferrara U. ; INFN, Ferrara) ; Mazzolari, A (Ferrara U. ; INFN, Ferrara) ; Vincenzi, D (Ferrara U. ; INFN, Ferrara) ; Milan, R (INFN, Legnaro) et al.
Multiple volume reflection by different planes passing through the < 111 > axis in a bent silicon crystal was observed for the first time for 150 GeV/c negative particles, pi(-) mesons, at one of the secondary beams of the CERN SPS. The beam of pi(-) mesons was deflected opposite to the crystal bend by an angle of about 48 mu rad, which is 4.6 times larger than in a single volume reflection by the (110) bent planes [...]
2011
- Published in : Europhys. Lett 93 (2011) 56002
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3.
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Deflection of high-energy negative particles in a bent crystal through axial channeling and multiple volume reflection stimulated by doughnut scattering
/ Taratin, AM (Joint Inst Nucl Res, Joliot Curie 6, Dubna 141980, Moscow Region, Russia.) ; Malyarenko, L G (Petersburg Nucl Phys Inst, Gatchina 188300, Leningrad Reg, Russia.) ; Chesnokov, Yu A (Inst High Energy Phys, RU-142284 Protvino, Russia.) ; Denisov, A S (Petersburg Nucl Phys Inst, Gatchina 188300, Leningrad Reg, Russia.) ; Dalpiaz, P (Univ Ferrara, Dipartimento Fis, INFN Sez Ferrara, I-44100 Ferrara, Italy.) ; Bagli, E (Univ Ferrara, Dipartimento Fis, INFN Sez Ferrara, I-44100 Ferrara, Italy.) ; Taratin, A M (Joint Inst Nucl Res, Dubna 141980, Moscow Region, Russia.) ; Lapina, L P (Petersburg Nucl Phys Inst, Gatchina 188300, Leningrad Reg, Russia.) ; Vavilov, S A (Petersburg Nucl Phys Inst, Gatchina 188300, Leningrad Reg, Russia.) ; Fiorini, M (Univ Ferrara, Dipartimento Fis, INFN Sez Ferrara, I-44100 Ferrara, Italy.) et al.
Different kinds of deflection in a silicon crystal bent along the (111) axis was observed for 150 GeV/c negative particles. mainly pi(-) mesons, at one of the secondary beams of the CERN SPS. [...]
2010
- Published in : Phys. Lett. B 693 (2010) 545-550
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4.
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First results on the SPS beam collimation with bent crystals
/ Scandale, W (CERN) ; Arduini, G (CERN) ; Assmann, R (CERN) ; Bracco, C (CERN) ; Gilardoni, S (CERN) ; Ippolito, V (CERN) ; Laface, E (CERN) ; Losito, R (CERN) ; Masi, A (CERN) ; Metral, E (CERN) et al.
2010 - 5 p.
- Published in : Phys. Lett. B 692 (2010) 78-82
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5.
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Probability of inelastic nuclear interactions of high-energy protons in a bent crystal
/ Scandale, W (CERN) ; Losito, R (CERN) ; Silari, M (CERN) ; Bagli, E (INFN, Ferrara ; Ferrara U.) ; Baricordi, S (INFN, Ferrara ; Ferrara U.) ; Dalpiaz, P (INFN, Ferrara ; Ferrara U.) ; Fiorini, M (INFN, Ferrara ; Ferrara U.) ; Guidi, V (INFN, Ferrara ; Ferrara U.) ; Mazzolari, A (INFN, Ferrara ; Ferrara U.) ; Vincenzi, D (INFN, Ferrara ; Ferrara U.) et al.
2010 - 5 p.
- Published in : Nucl. Instrum. Methods Phys. Res., B 268 (2010) 2655-2659
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6.
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High-efficiency deflection of high-energy negative particles through axial channeling in a bent crystal
/ Scandale, Walter (CERN) ; Vomiero, Alberto (INFM, Brescia) ; Bagli, E (INFN, Ferrara ; Ferrara U.) ; Baricordi, Stefano (INFN, Ferrara ; Ferrara U.) ; Dalpiaz, Pietro (INFN, Ferrara ; Ferrara U.) ; Fiorini, Massimiliano (INFN, Ferrara ; Ferrara U.) ; Guidi, Vincenzo (INFN, Ferrara ; Ferrara U.) ; Mazzolari, Andrea (INFN, Ferrara ; Ferrara U.) ; Vincenzi, D (INFN, Ferrara ; Ferrara U.) ; Milan, R (INFN, Legnaro) et al.
Deflection due to axial channeling in a silicon crystal bent along the [111] axis was observed for 150 GeV/c negative particles, mainly π− mesons, at one of the secondary beams of the CERN SPS. The whole beam was deflected to one side with the efficiency of about 90% and with the peak position at the bend crystal angle α=43 μrad. [...]
2009
- Published in : Phys. Lett. B 680 (2009) 301-304
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7.
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Multiple volume reflections of high-energy protons in a sequence of bent silicon crystals assisted by volume capture
/ Scandale, W (CERN) ; Vomiero, A (INFM, Brescia) ; Bagli, E (INFN, Ferrara ; Ferrara U.) ; Baricordi, S (INFN, Ferrara ; Ferrara U.) ; Dalpiaz, P (INFN, Ferrara ; Ferrara U.) ; Fiorini, M (INFN, Ferrara ; Ferrara U.) ; Guidi, V (INFN, Ferrara ; Ferrara U.) ; Mazzolari, A (INFN, Ferrara ; Ferrara U.) ; Vincenzi, D (INFN, Ferrara ; Ferrara U.) ; Milan, R (INFN, Legnaro) et al.
2010 - 5 p.
- Published in : Phys. Lett. B 688 (2010) 284-288
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8.
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Observation of channeling and volume reflection in bent crystals for high-energy negative particles
/ Scandale, W (CERN) ; Vomiero, A (INFM, Brescia) ; Bagli, E (INFN, Ferrara) ; Baricordi, S (INFN, Ferrara) ; Dalpiaz, P (INFN, Ferrara) ; Fiorini, M (INFN, Ferrara) ; Guidi, V (INFN, Ferrara) ; Mazzolari, A (INFN, Ferrara) ; Vincenzi, D (INFN, Ferrara) ; Milan, R (INFN, Legnaro) et al.
Deflection due to planar channeling and volume reflection in short bent silicon crystals was observed for the first time for 150 GeV/c negative particles, π− mesons, at one of the secondary beams of the CERN SPS. The deflection efficiency was about 30% for channeling and higher than 80% for volume reflection. [...]
2009
- Published in : Phys. Lett. B 681 (2009) 233-236
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9.
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First observation of multiple volume reflection by different planes in one bent silicon crystal for high-energy protons
/ Scandale, E (CERN) ; Vomiero, A (INFM, Brescia) ; Bagli, E (INFN, Ferrara) ; Baricordi, S (INFN, Ferrara) ; Dalpiaz, P (INFN, Ferrara) ; Fiorini, M (INFN, Ferrara) ; Guidi, V (INFN, Ferrara) ; Mazzolari, A (INFN, Ferrara) ; Vincenzi, D (INFN, Ferrara) ; Milan, R (INFN, Legnaro) et al.
Multiple volume reflection by different planes in a bent silicon crystal with its 111 axis orientation close to the beam direction was observed for the first time for 400 GeV/c protons at the CERN SPS. The proton beam was deflected to the side opposite to the crystal bend by an angle of about 67 μrad, which is five times larger than in a single volume reflection by the (110) bent planes [...]
2009
- Published in : Phys. Lett. B 682 (2009) 274-277
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10.
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Experimental study of the radiation emitted by 180-GeV/c electrons and positrons volume-reflected in a bent crystal
/ Scandale, Walter (CERN) ; Vomiero, A (INFM, Brescia) ; Baricordi, S (INFN, Ferrara ; Ferrara U.) ; Dalpiaz, P (INFN, Ferrara ; Ferrara U.) ; Fiorini, M (INFN, Ferrara ; Ferrara U.) ; Guidi, V (INFN, Ferrara ; Ferrara U.) ; Mazzolari, A (INFN, Ferrara ; Ferrara U.) ; Della Mea, G (INFN, Legnaro) ; Milan, R (INFN, Legnaro) ; Ambrosi, G (INFN, Perugia) et al.
The radiation emitted by 180-GeV/c volume-reflected electrons and positrons impinging on a bent crystal has been measured by the H8RD22 Collaboration on the H8 beamline at the CERN SPS. A dedicated spectrometer has been developed to measure high-energy photon spectra (up to ~100 GeV) under volume reflection: photon and charged particle beams have been separated by a bending magnet and leptons were detected and tagged by microstrip silicon detectors and a Pb-scintillator sampling calorimeter. [...]
2009 - 9 p.
- Published in : Phys. Rev. A 79 (2009) 012903
APS Published version, local copy: PDF;
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